Gauge and gauge stop mechanism for trimming and cutting machines



Oct. 12, 1937. E. M. BACKETT Er AL 2,095,309

GAUGE AND GAUGE STOP MECHANSM FOR TRINLMING AND CUTTING MACHINES 7Sheets-Sheet l Oct. 12, 1937. E. M. BRACKETT r-:r AL

GAUGE AND GAUGE STOP MECHANISM FOR 4TRIIVEMING AND CUTTING MACHINESFiled Jan. s, 1934 7 sheets-sheet 2 www MKM

Oct."12, 1937. E. M BRAcKl-:TT ET Aa. 2,095,309

GAUGE AND GAUGE STOP MECHANISM FOR TRIMMING AND CUTTING MACHINES FiledJan. 48, 1954 7 Sheets-Sheet 3 l s www kw QN c www 2S Rm www Ip vw tmwww ,i i s NN QN f N m WMM M @M Q QQ www 1Q S k l w MMM amv wm ii NQATTORNEY Oct. l2, 1937. E. M. BRACKETT Er AL 2,095,309

GAUGE AND GAUGE STOP MECHANISM FOR TRIMMING AND CUTTING MACHINES FiledJan- 8. 1934 '7 Sheets-Sheet 4 ATTORNEY E. M. BRACKETT E AL 2,095,309"GAUGE AND GAUGE: sm? MECHANISM FOR TRIMMING AND cm'ffmciP MACHINES Oct.12, 1937.

Filed Jan. 8,' 1954 fr sheets-sheet 5 Q* I N3? INVENTOR5 BY Le IWfl/jams.

ATTORNEY Oct. `12, 1937, E. M. BRAcKE'rT ET AL 2,095,309

GAUGE AND GAUGE STOP MECHANISM FOR TRIMMING AND CUTTING MACHINES ATTQRNEY E. M. BRACKETT El' AL oct. 12, 1937.

GAUGE AND `.GAUGE STOP MECI-{ANISM FOR TRIMMINQ AND CUTTING MACHINESFiled Jani 8. 1934 7 Sheets-Sheet '7 VENTORS Mraaleff Daf/ele of;14H/fps a ATTORNEY Patented Oct. 12, 1937 Y GAUGE AND GAUGE sTorMECHANISM non TRIMMTNG AND CUTTING MACHINES Edward 'M.` Brackett,Dietrich Daneke, and Leo C; Williams, Topeka, Kans., assignors, by mesneassignments, yto Dexter Folder Company, New York, N. Y., a corporationof New York .(1934) Application January s, 1934. seriarNo; 705,760"

29 claims. (o1. 164-59) A Our invention relates to cutting and trimmingl'machines and more particularly -to a gauge and gauge stop mechanismfor automatically positioning the stock to beoperated upon, the presentVinvention beingdirected to improvements in a Y similar mechanismdisclosed in United States Patent No. 1,743,421', issued on Januaryfith,1930. `In themechanism disclosed in the patent, it is necessary toprovide a gauge stop cylinder for eac-h stock-run'through the machine,or else the stops must be readjusted betweeneach run owing to the factthat a stop groove is required for each- 1 cut of the stock. Y

e It is the principal object of the present invention to provide aplurality of job set-ups upon a single stop cylinder so that it is notnecessary to transpose cylinderslor readjust the stops whe changing fromone run to another. Y Other objects of the invention are'to provide `forclosesetting of all the respective stops required for a run of stock ina single grooveof the stop cylinder, toprovide for more accuratepositioning of the stock to be cut, to provide checking engagement ofthe stock carrier with the stops so Ythat thefstock-is always retainedin ContactY with the carriage, to provide for automatic movement ofthecarriage in carrying the stock to position for making the respectivecuts, and to provide safety" factorsV to protect the operator of themachine from injury.

It is 'also' an important object of the present yinvention to `provide agauge stop mechanism -whichmay be actuated in a manner similar to thatdescribed in the vabove mentioned patent.

In accomplishing these and other'objects of the invention,we haveprovided improved details ofV structure, the preferred formof whichgisillustrated in the accompanying drawings, wherein:

Fig. 1 is a perspective'view of a cutting and trimming machine equippedwith Va gauge and gaugelstop mechanism embodying the features of ourpresent invention.

"Fig.` 2 is'an enlarged plan view of a portion of the table, stockcarriage, and the gauge and gauge r stop mechanism for positioning thecarriage on Vthe table when gaugingt'he respective cuts.

"FigL 3 is an enlarged cross sectional View on thev line 3-3,"Fig`.` 2,particularly illustrating the stop cylinderY and conveyor means forautomatically `moving the carriage to stop in' gauging position. T"Figi4 is a detail sectionalview of the clutch for -engagingf'the conveyorbelt and the associated control mechanism for the safety switch whichgoverns operation ofthe kniie actuatingmechalfnism.

5 is an enlarged detail perspective view of the mechanism for actuatingthe stop cylinder.

Fig. 6 is a longitudinal sectional view of the ratchet mechanism formoving the stop cylinder. Y

7 is a vertical section through the ratchet f 5 mechanism on the line'lf-l, Fig. 6.

Fig. 8 is a perspective View of the ratchet mechanism and the stopcylinder particularly illustrating the driving connection therewith, thestop cylinder being shown in disengagement with the "l ratchet mechanismtobetter illustrate the driving connection. Y

Fig. 9 is an enlarged detail perspective view showing the Vmethod ofmounting the opposite end ofthe gauge cylinder. l

' Fig. 10 is av vertical cross section through the mechanism forchecking movement'of the carriage when the stop arm thereon engages oneof the stops on the gauge cylinder. .Y

Fig. 11 is an enlarged plan view, partly in sec- `20 tion, illustratingthe latchY mechanism'for preventing operation of thercheck mechanism.

Fig. 12 is a detail perspective View of the carriage stop arm,

Fig. 13 is an enlarged longitudinal section :25 through the conveyormechanism for moving the stock carriage, particularly illustrating thedrive therefor; as Well as part "of the driving'mechanism for the stopcylinder. y

Fig. 14 is a detail perspective View of the mov- -30 able clutch shoe'which engages the conveyor belt to effect movement ofthe carriage.

Fig. 15 is an enlarged detail section through a portion Vof the clutchcarrier arm of the carriage,

lillustrating engagement of the clutchmechanismj with the conveyor belt.Y

Fig. 16 is an enlarged vertical section through the control handle foractuating the conveyor clutch to effect movement of the carriageand thesafety switch for locking out movementof the knife operating mechanism.

Fig. 17 is a detail perspective View of one ofthe stop elements employedWhereit is necessary to obtainrelatively short movements of thecarriage, as when squaring `the vsides of a substantially square pieceof stock, or making two cuts in close proximity to each other.

Fig. 18 is a detail perspective view of one of v the gauge stops.

` ciated Ystop elements as set up'in making relatively. 55

close cuts, that is, cuts where the stops must be made between thelength of the stop elements.

Fig, 21 is a cross sectional View on the line 2I-2I, Fig. 20.

Fig. 22 is a cross sectional view through the stop cylinder and the armof the carriage mounting the stop arm.

Fig. 23 is a similar view showing the stop cylinder after it has movedinto position whereby the stop arm engages the upper stop element.

Fig. 24 is a similar view of the stop arm in engagement with the upperstop element after the stop cylinder has returned to functionalposition.

Fig. 25 is a detail sectional view through the solenoid controlling theknife operating mechamsm.

Referring more in detail to the drawings:

I designates a cutting and trimming machine of the type employed incutting various stock such as stacks of sheet material, circulars,catalogs, and other matter printed in gangs, where it is necessary tocut off and trim the edges of the respective printed matter.

The machine includes a base portion 2 carrying a horizontally positionedtable 3 having a lateral and rearwardly extending portion 4 on which thestacks of sheet material are fed into cutting relation with a knife 5.The knife 5 is reciprocably mounted in suitable guides 3 and 'I providedin the adjacent faces of an inverted U- shaped supporting frame 3 thatextends above the table 3. The knife 5 is reciprocated, as in customarymanner, upon actuation of a control lever 9 having a handle IBpositioned above the path of travel of the stock to be cut by the knife.

The lever 9 includes a vertical portion II extending through the table 3and having an arm I2 connected therewith for actuating a clutch througha connecting link I3, the clutch being enclosed in a housing I4 forminga part of the base 2 and which connects the motor I 5 with thetransmission indicated by the housing I6 for effecting operation of theknife.

The mechanism just described is conventional to present cutting andtrimming machines and specifically forms no part of the presentinvention, but is illustrated to give a better understanding of thegauge and gauge stop mechanism that is associated therewith.

In cutting 01T the respective printed matter, each stack of sheetmaterial is placed upon the table 3 with one side thereof moving inguided relation with a longitudinal guide I I that squares the stockwith the knife so that the knife cuts at right angles to that side ofthe stock.

The first cut is perhaps a trimming cut across the end of the stock andthe successive cuts are to separate the respective sets of printedmatter to form individual catalogs, the sheets of a book, or forwhatever purpose the stock is to be used. After running the stockthrough the trimmer to cut olf the respective sets of printed matter,the side edges thereof may be trimmed to the proper size by turning thestock at right angles to the position that they assumed when making thefirst run and running the sections through the machine in a similarmanner.

In order to accurately position the stock so that the cuts are made inthe proper place, it is necessary to provide a gauge mechanism to 4gaugethe position of the stock prior to making the cut, as set forth in theabove mentioned patent.

This is accomplished by moving the stock with the side thereof in guidedrelation with the guide I 1 by a carriage I8 that is slidably mounted onthe top of the table 3 and has an abutment portion I9 engaging the rearend of the stock and a right angularly extending guide portion 20 movingin sliding contact with the face of the guide Il'. The carriage is movedin the direction of the knife until the place where the rst cut is to bemade aligns with the cutting edge of the knife. The knife is thenactuated to make the cut after which the carriage is advanced to thepoint of making the next cut and so on until all of the cuts have beenmade.

In order to quickly and accurately gauge the points at which the cutsare to be made, stops are provided for engaging the carriage when thepoint at which the cut is to be made aligns with the cutting edge of theknife, as now to be described.

The upper edge of the guide portion 2! of the carriage is provided witha laterally extending flange portion 2| that extends over a rail 22 ofthe guide Il and has a guide shoulder portion 23 engaging the outer faceof the rail and the upper face of the guide to cooperate with its innerface in retaining the carriage in sliding contact therewith. The guideshoulder portion 23 terminates in a laterally extending flange portion24 to form a seat 25 for a block 26 carrying a stop arm 2'I.

The stop arm is best illustrated in Fig. l2 and comprises asubstantially rectangular body portion 28 that is pivotally mounted on apin 29 in a transverse groove 30 of the block 26. The groove 30 is ofsufficient width to provide free sliding engagement of the oppositefaces 3I and 32 of the stop arm with adjacent faces 33 and 34 of thegroove for a purpose later described. The

stop arm has a triangular shaped head portion 35 having a stop engagingforward face 35 lying in the plane of the forward side 32 of the arm anda downwardly inclined opposite face 3l to form; a cam surface foreffecting lifting of the stop arm when it engages a stop element uponretractive movement of the carriage.

The block 25 is slidably mounted on the seat portion 25 of the angeportion 2| and has side grooves 38 and 39 respectively engaging aninwardly extending rib 4) on the flange ZI, and a rib 4I on a block 42that is fixed to the flange 24 by fastening devices 43 extending throughthe block and threaded into the flange, as shown in Fig. 3. The rib d isspaced from the seat 25 to provide a groove 44 cooperating with a groovel5 in the block 42 for accommodating the T-shaped head flange 46 that isformed on the block by reason of the grooves 38 and 39.

It is thus apparent that the block is retained in sliding engagementwith the carrier so that when the carrier is moved to advance the stackunder the knife, and the projecting stop face of the arm 21 engages astop element, the block 26 will be `detained by the stop element whilethe carriage continues its advance until stopped by checking mechanismnow to be described.

This is an important feature of the present invention for the reasonthat if the carriage is abruptly stopped when the stop arm engages thestop element, the inertia at the moment of impact will cause the stockto move from the abutting portion I!! of the carriage and the cut willnot be made in the proper place, but by providing checking means forabsorbing the rst of the shocks, the carriage may be brought to agradual stop so that the stock remains in Contact with the carriage.

The checking mechanism is best illustrated in Fig. 10 and includes acylinder 47 that is suspendjbl edwithin an` outer cylinder 48. The innercylinder 41 is spaced from the outer cylinder 48 to pro.-

vide: an annular reservoir 49, therebetween forV retainilig` acheckingjuid.

Slidable in the open upper end 5.0 of the inner cylinderisa piston l`havingl acone shapedlower end 5,2-term1natingtin an axial boss; 53. Thepis.- ton 5l is normally retained in its up-per position by` a coilspring 54 haying one end .engaging the bottom 55 of theinner cylinderand its; upperY end engaging around the boss 53;l f Formed inthe wallofthe; inner cylinder 41 in horizontal alignment with the cone shapedlower end of the piston are po-rts dthrough whichV the iiuid; in theinner cylinder: is expelled on downward movement of the piston; underinuence of the movement of thei block, 2.6. when. the stop arm 21thereon engages one of the stop elements.v

By observing Fig. 10'.. it. will be noted that as the piston movesdownwardly, the liquid space surrounding the lower end thereof isgradually constricted adjacent the outlet openings 55 so that flowtherethrough is gradually throttled to retard downward movement of thepiston.

When the piston moves in an upward direction under influence of thespring 54., the fluid is drawn from the annular reservoir 49 through aport 51 that is normally retained closed by a ball valve 58. and througha port 59 provided in the lower end of: the inner cylinder.

, The ball valve 5.8. is retained in seating position to close the port51 by a coil spring 68 having oney end engaging the ball and at itsopposite end a plug'tl threaded into the wall of the inner cylinder 41.

A The outer cylinder 48 is vented through a` port 52Y and is.` provided:with. Ya suitable fitting 53' by which the lubricant may be insertedVinto the reservoir 49.

In order to operably connect the piston 5lY with the stop arm carryingblock'Z,` we provide a rod 65, that isslidably mounted in an ear formedon the upper face of the flange'l. and having a threaded forward end 61extending loosely through an. axial bore B8 in the block.

Formed in the block and extending transversely oftheborei is a 'largerboreV B9 for mountv ,ing a cylindrical nut 19 that is threaded'Y ontothe end of the rod 65v to adjustably connect the rod l withV the block.

In order to,v clamp thecylindrical nut to the threaded' endV of therod',` the nut is preferably split, as at` 1| and provided with a drawlscrew 12 whereby the split portionof the nut canbe drawn together to.bindV the threaded end of the shaft and retain it in selected position.

The rear end ofthe rod is provided with aV knurled head 14 by which therod may be rotated in the nut to eifect its adjustment', as laterdescribed, and which engages'the arm 15. of a bell crank lever'l;

The'bell cranklever 'I5l is pivotally mounted on a pin '11` that isrotatably mountedin ears 18 carried by the flange 24 so that theV otherarm 19 of the bell crank extends over the axis of the piston 5I, asshownin Fig. 10. The arm 19 carries an adjusting screw 89 having aprojecting end engaging the upper end' ofthe piston to adjust therelation of 'the cone shaped end of the piston with the ports 56.

Fixed on the rod 65 between the block 26 and the ear (i6-'is` astopcollar 8| adapted to be engaged by the ear 56 when the blockisstopped Vupon engagement of the stop arm with one of the stopelements, so that the point at which-the cut in` to be madef'in; thestock may be positively alignedY with the cutting edge of the knife, thechecking action of the'piston 5I taking place during the time that theear 56 is advancing into contact with the stop `collar 8 l.

During this movement, it is apparent that the across the ports 55, achecking action will takeV place as the flow of fluid through the portsto the outer chamber 59 is gradually restricted owing to the taperthereof. Downward movement Vof the pistonf 5I will place the spring 54under tension to store up energy for moving the piston to retractedposition and advancing the block 25 relatively to the Ycarriage when thestop elementV is moved out of engagement with the stop arm aslaterdescribed. Y

The provision of this movement is an important feature of the presentinvention as it enables control of' the stop arm when the. stop meansmust be located in close relation in making successive cuts.

The: stop` members 82 are best illustrated in Figs. 17, 18, 19 and 2Oand are shown as comprising substantially rectangular body portionshaving stop. arm engaging faces 83 and at upperV faces 814i terminatingin downwardly inclined cam` portions. 85. for engaging the inclined cam.

portion 31 of the stop arm when the carriage is moved into retractiveposition so that the. stop arm will be pivoted on its pin 39 to passover a stop member.

Extending from` the inner face Yof the stop member at the opposite endsthereof are spaced guidev ribsti` for retaining an anchoring nut 81therebetween'.V The anchoringnut 81'is dove-tail in cross section andarranged so that the upper and lower sides 88 andl thereof convergeoutwardly from theinner face of the stop lug. The nutY B21" isprov'idedwith a threaded opening 90 for-receiving a screw 9i that is threadedthrough an opening 92 in the stop member and which hasV a head 93adapted toengage the outer face thereof for drawing the anchoring nuttoward the inner facev of .the stop member when the screw is rotated to`anchor the stop member in a groove of a stop cylinder now to bedescribed. v

In making the respective cuts, through the stock, it is apparent that astop member must be provided for each cut to be made so that thecarriage vwill be stopped in the proper place to make each individualcut and in order to mount the stop members, we provide a stop cylinder94 which is best illustrated iniifigs. 1, 2r, 3, 8, 9 and 13.

The stop cylinder is substantially of the same construction as thatdescribed in the above mentioned-patent and includes a cylindrical bodyextendinglongitudinally of the vertical guide I1 at the side thereofopposite to the carriage I8 and is mountedv so thatV a plane extendingthrough its horizontal axis is in substantial alignment with the stoparmwhen it is in stop engaging position, as showninFig. 3.

'IhemountingV for the cylinder is best-illustrated in;` Figs. 8 and 9wherein its forward end is'shown as carried by'an L-shaped bracket 95including-a depending arm 95 spaced from the frame-.8 by an?integralfarm 91 having an attach.-

ing flange 98 that secures the bracket by fastening devices 99 extendingthrough the flange and into threaded openings in the frame. The lowerend of the arm 96 carries a ring shaped bearing portion 00 rotatablymounting one end of a driving member IEII.

The driving member has a cone shaped center |32 and diametrically spaceddriving pins |03 on the end thereof that are mounted in the bearing |00.The opposite end of the driving member has a pintle portion |04rotatably mounted in a socket |05 in the frame 8, Fig. 6. The center |02engages in a cone shaped socket |06 in the end of the cylinder while thepins |03 engage in selected pairs of apertures |01 formed in circularseries about the axis of the cylinder.

The forward end of the cylinder is, therefore, supported in axialalignment by the cone shaped center |02 and is connected in drivingrelation with the driving member through the pins |03 engaging in theapertures |01.

The opposite end of the cylinder includes stepped collar portions |08and |09 terminating in a trunnion extension i0 having a cone shapedaxial socket il! which engages a cone shaped center ||2 that is formedon the end of a rod |3 which is siidably mounted in a split bearing H4,as clearly illustrated in Fig. 9.

The bearing H4 is formed on a Z-shaped casting H5 that is carried on theend of the guide |1 and is attached thereto by fastening devices H6. Thebearing ||4 carries a forwardly extending trough shaped bearing portion||1 for the trunnion ||0 which is retained therein by the center ||2.

When the center is in engagement with the socket, the split bearing lltis clamped about the rod ||3 by a screw ||8 that extends loosely throughthe hub portion thereof but is threaded into a socket in the lowerportion to draw the split sections of the bearing together in effectingclamping operation on the rod.

Formed in the periphery of the cylinder are a series of longitudinallyextending dove-tailed grooves H9 having substantially the same width anddepth as the dove-tail nuts 81 on the stop members so that when the nutsare slid into the dove-tailed grooves, the stop members may be retainedin adjusted position therein by tightening cap screws 9| to draw theinclined sides of the nut into clamping engagement with the inclinedfaces E of the dove-tail grooves.

For the sake of convenience, each one of the grooves ||9 may be numberedon the collar |08 as designated at |2| so that the stop members in eachgroove may be related to a particular run of stock through the trimmingmachine.

In the machine described in the above mentioned patent, where, forexample, six cuts are to be made across a stock in one run through themachine, there will be one stop member located in each one of sixadjacent grooves and the cylinder will be intermittently rotated tobring the successive stop members into position for stopping the carrierat the proper place, and the cylinder makes one complete revolution eachtime a gang of sheet material is fed through the machine.

Consequently, a cylinder is required for each run of stock through themachine. If not, the stop elements must be readjusted on the cylinder.

In the present invention, we provide for utilizing one groove for all ofthe stops so that if the cylinder contains ten grooves, each one of thegrooves of the cylinder may be utilized for a different run through themachine without changing the cylinder or readjusting the stops, as nowto be described.

When each individual groove is used for one run through the machine, weprovide for oscillating the cylinder in a clockwise direction, Figs. 22to 24, inclusive, just following each operation of the knife so that thestop elements may be moved out of engagement with the stop arm on thecarriage to permit the carriage to be advanced to engage another stopelement and so on until all of the cuts have been made.

When each individual groove is used for positioning the carrier, foreach individual cutting operation of a run, we provide means forintermittently rotating the cylinder continuously in an anti-clockwisedirection substantially similar to the operation described in the abovepatent.

In carrying out these respective movements of the cylinder, the drivingmember |0| is provided with a driving sprocket |22 that is driven from asprocket |23 that is rotatably mounted on a stub shaft 24 carried in thebracket |25 which is xed to the frame 8 at a point below the bracket 95carrying the driving member |0|, the driving connection being madethrough a chain |26 operating over the respective sprockets, Fig. 13.

The sprocket |23 is connected with a bevelled gear |21 also mounted onthe stub shaft |24 and which meshes With a similar bevelled gear |28that is xed on a vertical shaft |29 rotatably mounted in a laterallyprojecting arm |30 of the bracket |25.

Fixed on the lower end of the shaft |29 is a cup shaped clutch member 3|frictionally engaging a series of driving elements |32 on a drivingshaft |33, the driving shaft |33 being a continuously operating shaftdriven from any of the moving parts on the trimmer or by an individualmotor that is connected thereto in any desirable manner.

The driving elements |32 are interposed between similar driving disksthat are connected with the clutch member |3| and the respective drivingelements are retained in frictional driving contact with each other by aspring |34 having one end engaging against a collar |35 on the shaft |33and against a collar |36 bearing on the lower driving element.

With the construction thus far described, it is apparent that thecontinuously rotating shaft |33 will drive the bevelled gears |28 and|21, sprocket |23, chain |26, and sprocket |22 to provide continuousrotation of the driving member |0| to continuously rotate the stopcylinder. Means is, therefore, provided to stop rotation of the cylinderwhen the respective stop elements are in position to be engaged by thestop arm on the carrier.

This is accomplished by a ratchet mechanism, Figs. 5, 6, '7 and 8,including a ratchet cylinder |31 keyed to the driving member |0| by aspline |38. The periphery of the ratchet sleeve is provided with aseries of longitudinal ratchet grooves |39 extending from the endthereof adjacent the stop cylinder toward the end adjacent the sprocket|22 in progressively advancing distances to provide in effect a seriesof juxtaposed ratchet disks, each having a different number of ratchetteeth, the rst, or that nearest the sprocket |22 having one ratchettooth, the next two teeth, the next three teeth, and so on to thatadjacent the stop cylinder which carries ten teeth, each tooth beingcomplementary to one of the dove-tailed grooves in the stop cylinder.

i. m'ounted in a socket `|f|| in the frame 8.

The ratchet mechanismvalso includesafrotatable shaft |40 having one end.mountedin the bracket arm 96 at a point above the actuator shaft IDI andits opposite end rotatably The shaft is provided with a spaced seriesoftransverse grooves |42 designated-from` zero to ten, the

. groove designated one being located'directlyrover the -portion'iof'theratchetcylinder having one tooth, the groove two over theportion of thecylinderA having two teeth,V the groove three over that portionl of thecylinder having three teeth, and so on, so that the groove designatedten will bel-over that portion of the cylinder having ten teeth, asshown in Fig.- 8.

Slidablymounted on the rotatable shaft |40 is'V a detent |43 including acollar |44 slidable on the-shaft and having a depending pawl portion i|45- `adapted to engage in oney of the ratchetA grooves |39 when thepawl is positioned in alignment with one of the grooves designated fromone to ten.V

In order tolretain the detent in alignment with oneofthe selectivegrooves, the collar |44 carriesa radially extending boss |46 having'anaxial bore^|4l^ in which is slidably mounted a pin |48- having anend |49adapted to engage in one of` the-grooves and ahead |56 on its Oppositeend by fvvhich the-pin may be grasped to withdraw the end |49so thatthe'detent may be slidialong the'shaftto anyone of the grooves, as laterdescribed.

The `pin |49 isnormallyretained in engage# ment with Ythe-shaft |40` byarwire spring |5| havingits lower end fixed to the lower end of thepawl'byaclamping screw |52 and its upper end extending into an'opening |53formed in the boss and into a notch- |54 in the shank of the pin; theopening |53 being of sufficient width to f permit movement of the pin towithdraw the end When the detent is latchedin numbertwo` position, itwill allow the ratchet sleeveto make one-tenth'of-a'revolution and thennine-tenths of `a revolution on consecutive Voperations'of the knife;when in number three position, the sleeve can make two consecutiveone-tenth revolutions Y and then eight-tenths of a revolution upon con-Y secutive movementsof the knife, and so on to the number tenpositiom-where the sleeve makes onetenth of a revolution at eachconsecutive opera- Y tion of the knife.

It isith'us apparent that if the detent is in the number one groove, thenumber one groove of.k

thecylinder will make one completev revolution and `be returned to theposition at which it starts. If the de'tent is in number two groove onthe; shaft |40,the number one groove of the cylinder will beadvancedonespace for each of two operations andthen'eight spaces on thenext operation of the knife to bring the number one groove' toitsoriginal position, and so on.

If the detent--is in the number ten groove, Y

thecylinder will be advanced one groove-upon eachlfrelease of the detentto bring the next succeeding groove to position.

In the rst instancey-on-ly one -stop=element V-will be used, inthesecond instance, two stopl elements, in the third, three.. and so on,each stop element gauging a cutto `be made on an individA ual stack Vof.sheet material. Y

For example, if only two. cuts are to be` made in the .sheet material,at each run through the machine, a stop member. rwill be-.positioned ingrooves. numbers one and two of the stop cylinder.

to stop the carrier at the proper position. Y

If six cuts are to be made,` grooves numbers one, two, three, four, fiveVand six will be used.`

and the detent |43fwillfbe positioned in the sixthgroove so thatitengages six of the ratchet 1 teeth.

While we `describe Va uniform arrangement of the stop elementsrelatively to the grooves in the stop cylinder, it is obvious that anycombina-V tion of arrangements for the stop elements may be used.

In order to lift the detent to permit rotationI of the stop cylinderbetween successive cuts, the

knife is provided with a projecting arm |56 that Y is arranged to engagea lever |51 near the lower end of the knife structure,` the lever|5T`being pivotally mounted'on a .studi |58 fixed-'totheframe 8.

shaft |46. at a point substantially over the sprocket |22;v The. outerend of the lever Vengages against theV head |66 of an adjusting stopscrewlhthat is adjustably mounted in the end of the lever |51, the endofthe lever being retained against the head of the. screw by a coil spring|62 having one end. xedto a pin |63 on'the lever arm` |59 and itsopposite end hookedto bracket 95.

It is thus apparent that at the end of each down stroke of the knife,the arm |56 `will strike the 1 lever |51'` to cause the lever arm |59 torock the shaft |40 .in a counter-clockwise direction, Fig. 5, to liftthe pawll from engagement with one of the ratchet grooves. Y

The :free end of the lever projects outwardly.} and engages a lever arm|59 that is fixed tothe As soon as the pawl is released from the groove,Y'

the chain |26 is free to drive the ratchet sleeve |31 untiliit is againstopped by theY pawl-whichhas been returned into engagement with the dsleeve by the spring` |62 vjust as soon as the arm |55 disengages withthe lever |5l on the up strokeof the knife.- When the pawl engages thefollowing ratchet groove, the Aactuator shaft will belocked!- againstvrotation thereby'.V However, this Wi1l`not aifect operation of theshaft |33 due to the slip clutch connection withthe shaft |29.'Y

With the ratchet mechanism thus described, Y

the machine can be operated in substantially the same manner as thatdisclosed in the patent,

We prefer, however, to provide for Lusinga single groove for each-runthrough the machine and this isaccomplished'as previously pointed out`by effecting oscillation of the actuator shaft 10|.'

To effect oscillation of the shaft in a Aclockwise direction so that thestop element is moved downwardly'one-space suflicient to permit passingof the stop arm,` we provide a rockV shaft |64 `thatjis rotatablymounted in the frame 8` invbearings A |65, Fig. 5. A

Adjustably fixed on the shaftis a lever arm |66 its free end inthe pathof travel of a web or vprojecting inthe direction of the knife andhaving' 70 lug |61 on the end ofthe knife, so that when the Y knifeapproaches the downwardlimit `of the` stroke, the web |6-will rock theend of the levergj |66 to rock the shaft |64.V`

Fixedto the outer end--off-the shaft |64-is "a lever arm |68 that isconnected by a link |69 with a lever arm |10 loosely mounted on theactuator shaft |0| at a point between the ratchet sleeve and thesprocket |22, as shown in Figs. 5 and 6, the link |69 being pivotallyconnected with the ends of the levers |68 and |10 by yoke shaped heads|1| having wrist pins |12 extending through openings in the ends of thelever arms. The heads l1| preferably are threadedly mounted on the link|69 so that the spacing between the lever arms may be varied to adjustthe relative positions of the arm |66 with the stop |61 on the knife.

When the stop cylinder is to be oscillated by the arm |66, the arm |10is xed in driving relation with the actuator shaft |0| by a set screw|13 threaded into a boss |14 on a collar |15 of the lever arm |10 andhaving its end engaging against the periphery of the actuator shaft |0l.

The detent |43 previously described is then positioned in the groovedesignated |16 in the shaft |40 which is designated 0 so that the end ofthe pawl engages in a notch |11 in the collar |15. In this position thechain |26 is prevented from rotating the stop cylinder. However, whenthe lug |61 on the knife engages the arm |66, the arm |10 effectsrotation of the stop cylinder in a clockwise direction to carry the stopelements out of engagement with the stop arm on the carrier, but uponthe return movement of the knife, the driving action of the chain |26through the slip clutch connection will rotate the actuator shaft llllin an anti-clockwise direction to return the stop elements intoalignment with the stop arm on the carrier.

When the stop elements are in position, the notch |11 will have engagedthe detent to stop rotation of the actuator shaft |0| after which theclutch connection |3l will slip. When the set screw |13 is released, themovement of the rock shaft |64 in a counter-clockwise direction islimited by a stop lever |18 which engages a pin |19 on the frame 8, Fig.3.

While the carriage may be slid manually across the table to engage therespective stops in the manner disclosed in the patent, we provide meansfor mechanically moving the carriage in order to reduce the effort onthe part of the operator in moving heavy stacks of sheet material underthe knife.

This is accomplished by an endless conveyor l that is positioned inparallel relation with the guide |1 and which is adapted to beselectively engaged with the carriage by a suitable clutch mechanism|8l. The conveyor includes horizontally spaced pulleys |82 and |83, eachhaving a face flange |84 that is connected to a hub |85 by spokes |86.

The hub |85 of the pulley |82 is splined to a vertically positionedshaft |81 mounted at the forward end of the table and the pulley |83 isloosely mounted on a shaft |88 at the rear end of the table.

The shaft |81 has its upper end rotatably mounted in a bearing |89supported by an arm |99 projecting from the side edge of the table 3 andits lower end is rotatably mounted in a gear housing l9| supported onthe side of the base 2. Fixed on the shaft within the gear housing is aworm gear |92 meshing with a worm |93 on a constantly driven shaft |94.The shaft |94 may be operably connected with the shaft |33 or anycontinuously moving part of the trimming machine, or it may be driven bya separate individual drive, not shown.

The shaft |88 is rotatably mounted in a bearing |95 having a foot flange|96 that is adjustably mounted on a plate |91 supported from the tableextension by an arm |98 similar to the arm |98 previously described.

The plate |91 has a longitudinal slot |99 for passing fastening devices200 extending through the flange |96 to adjustably secure the bearing|95. The bearing |95 is adjustably movable on the plate |99 by a screw20| having its ends rotatably mounted in vertical lugs 202 and 203carried at the ends of the plate and which extends through a threadedopening in the bearing |95. The screw 20| is provided with a polygonalhead 204 by which it may be rotated to adjust the spacing of the pulley|83 relatively to the pulley |82.

Operating over the face flanges |84 of the pulleys is an endless belt205 having the inner run thereof moving in close proximity to the guidel1 at a point slightly below the rail 22, as best illustrated in Fig. 3.

The clutch mechanism |8| is supported on a lateral angular extension 206carried by the ange 24 and includes a fixed plate 201 that is bracedfrom the flange 24 by spaced webs 208 having slots 209 for passing thebelt. The webs 208 also carry a movable clutch plate 2| 0 at the outerside of the belt to clamp the belt against the plate 201. The clutchplate 2|0 is supported by pins 2|! slidable in bushings 2 l2 fixed inrecesses 2l3 in the webs 208 and is normally retained from engagementwith the belt by springs 2|4 having their ends bearing against thebushings 2|2 and against collars 2|5 on the pins, Figs. 14 and 15.

The movable clutch plate is actuated by a cam 2| 6 on a rock shaft 2 l1which is rotatably mounted in the webs 208 and has an upwardly extendingarm 2l8 terminating in a horizontal portion 2l9 extending across the topof the flange 2| in a transverse groove 220. The end of the horizontalportion 2|9 at the inner face of the guide portion 20 of the carriage iscurved downwardly, as at 22|, to connect with a sliding bar 222 movablevertically of the portion 20 of the carriage at the rear of the backstop portion |9.

The bar 222 has a guide pin 223 on its lower end that is slidablymounted in an opening 224 in the carriage and is normally retained inits uppermost position by a coil spring 225 having one end bearingagainst the bar and its opposite end against the carriage. The upwardmovement of the bar is limited by a pin 226 thereon which engages a stud221 threaded into the side portion 20 of the carriage, Fig. 16.

Pivotally mounted on a vertical post 228 on the side portion 20 of thecarriage is a hand support 229 that is pivotally connected with the bar222 by a pin 230, the hand support being pivotally mounted on the postby a pin 23 'I'he hand support is adjustably mounted relatively to theheight of the stack by providing a series of apertures 232 in the post228 for receiving the pin 23| and the bar 222 is provided with a similarseries of apertures 233 for receiving the pin 230 whereby the handsupport can be positioned relatively to the height of the stacks runthrough the machine.

To effect engagement of the clutch, the hand is placed on the handsupport in such a manner that the weight thereof causes depression ofthe bar 222 against tension of the spring 225. This movement of the barrocks the shaft 2|1 to cause the arm 2l5 to move the clutch plate 2| 0into clamping engagement with the outer face of the belt and the innerface of the belt into clamping engagement with the fixed plate 201.

aoeaeoee mains in position to make the cut.

To control operation of the knife, we provide a safety mechanism so thatbefore the Voperator can pull the lever 9with his right hand, the lefthand. of theiioperator must be resting. on the` lever 229. Y

Connected with the shaft 2|1, Fig. 4, is a lever 234A having a yokeshaped lower end 235 that engages the arm 236 of a bell cranklever 231.The

bell crank lever 231 ispivoted on a lug238 that is iixed to the. portion206 of the flange 24.

The otherarm 239. of the bell crank lever projects. underithe. platej261and actuates a switchv `24|)that is. connected in circuit With asolenoid 24:|,`Fig. 25,;which controls a detent 242 for latching thelink I3 previously described.V

When. thehand. of the operato-r is resting `on the lever229, thecircuitiwill be closed Vthrough .the `switch24|l to effect retraction ofthe detent 242 andallow movementof the link |3 when the control lever 9is operated.

In some instances, as previously described, it

is necessary to Vlocate ,the stops relatively close to-` .getherb Whenthis occurs,rit is impossible to use the stop elements disclosed inFigs. 18 and 19.

We therefore provide aspecial stop element 243 having projecting lingers244 adapted to extend over the upper edge 84 of therst stop member.

`If other stop elements are required, another specially constructed stopelement 245 is provided having a longer finger 246 which is positionedover the finger 244, as clearly shown in Fig. 20. On

the first cut the stop arm 21 engages Ythe stop ele-V ment 82, on thenext cut the end of the finger-244, and .onthe next, the end of thelinger 246.

The conveyor belt for moving the carriage may be `enclosed by a suitableguard 241, Fig. V2, having a supporting bar 248 extending across its.forward end to cooperate with cone shaped. cen# ters ',249 and 259projecting from theface of the frame 8 to supportextrastopycylinders-which are used .in the machineythefforward ends of theextra cylinders being supported by theA centers `,249` and 259 andtheends resting in seats 25| and 252 in the bar 248.

In order to set the stops for" obtaining correct spacing of therespective cuts to be made in the stock, the top faceof the rail 22 isiprovided with 1a scale 253 that is readable through an opening 254- inthe` carriage, the carriage being set relatively to the scale by meansof agauge mark 255 on a plate `256rnounted in the opening 254, as

shown inFig. 2.

Towrelieve the weight of the carriage .on the table, the outer endthereofmay be supportedV upon a roller 251 that is mounted inV a slotl258,

Fig.` l, and has its periphery' operating on the Y table extension. Astop 259'may also be pro- .',Vided onv the table for limitingthe'retractive movement ofthe carriage. Y

, To operate the, carriage by hand without aid of the conveyor, it maybe desirable to lock out the checking mechanism. This maybe accomplished:when desired by` a sliding latch bar 26|] mounted in guide 26| andarranged to engage between the knurled collar 14 and the lug 66,`Fig. l.

In-operating a cuttingy and trimming machine equipped with a gauge andgauge stop meo'ha-` -Y .1 lmsm Vconstructed as: described, a f. series.of Afstop elements for making the respective cuts are poi sitioned atthe correct place in one of the grooves ||9 to stop the carriagewhen theknife aligns with the place at which the cuts are to be made.'

A stack of sheet material to be operated upon is then placed with thelongitudinal side thereof in contact with the guide plate |1 and therear end bearing against the abutting portion I9 of the carriage.-

The left hand Iof the operator is then placed upon the hand lever 229 tocause engagement of the clutch with the conveyor, which effects movementof the carriage over the table to project the stack of sheet materialunder the knife.

As soon as the stop armi 21 engages the first stop element, the stop armcarrying block will be detained thereby, but the carriage willcontinueuntilthe collar 8| engages the front face of the on the end ofthestackrof sheets, adjustment.V

may be required to allow for the extra length. This may be accomplishedby adjusting the shaft p 65 to `vary, position of the stop arm carryingAThis adjust-,i

block `26 `on its guide track 25. ment is made by loosening the clampingscrew 12 and rotating the shaft 65 until the point at which the cut isto@ be made aligns with the cutting edge Yof the knife.

When all of the stops are placed in the same groove, the stop cylinderwill be cscillated by the arm |66 which oscillation is made effective bytightening the set screw |13 to secure the collar |15 to the drivingshaft ll. The detent |43 is moved to the 0 position so that the pawlthereof engages .in the notch |11.

As soon as the carriage engages the first stop,

`the belt will vslip between the gripping plates and remain in thatposition. VOperation of the hand rest 229 Veffects closing circuit:through Vthe switch 246 to the solenoid 24| to free operation of theknife actuating lever 9. This leveris then operated with the other handto cause descent of the knife to make .the rst'cut. As the knife nearsthe bottom of Vits strokethelug |61 will engage the lever arm |66 torock .the shaft |64, lever arm |68, to move the lever arm |10 in aclockwise direction through the connecting. link |69, the levers beingadjusted so that the stop cylinder may be rotated one space in adownward direction which removes Vthe stop lug from engagement with thestop arm.

Immediately upon the upward movement of the l knife following the, out,the chain |26 `which always has a `tendency to rotate the sprocket |22through the constantly driving shaft |33 will cause rotation of thedriving shaft lill in an anti-clockwise direction until the pawl of thedetent reengages in the notch |11. This will return the cylinder sothatthe groove carrying the stop elem-ents will align with the stop arm21. v

Ifthe operator has kept his hand on the `lever 229, the gripping actionof the clutch plates 201V and 2||J with the belt 295 will effectadvancement of the carriage until the stop arm. thereon engages.

the next stop element when the stack of sheet material will be inposition to make the second cut.

The procedure is then the same as just described in making the firstcut.

When the machine is to be operated by rotating the stop cylinder, theset screw H3 is loosened to allow free movement of the collar H5 on thedrive shaft l0! so that when the lug |61 on the knife engages the leverarm IGS, it will be ineffective in moving the stop cylinder.

The stop lugs are then positioned in four consecutive grooves of thestop cylinder and the detent 443 will be placed in number four positionso that the stop cylinder will be advanced in a counter-clockwisedirection after each operation of the press in substantially the manneras in the structure disclosed in the above mentioned patent.

In some jobs it may happen that stop elements must be mounted in agroove in such a position that it is impossible to locate them in theproper spaced relation. When this occurs, the first stop element isinserted in the groove and the other stop elements of the form shown inFig. 17 are positioned in the grooves so that the projecting endsthereof overlie the first stop element, as clearly shown in Fig. 20.

When the carriage is moved to make the first cut, the stop arm 2l willengage the stop element 82.

To make the second out, the stop cylinder will be oscillated one spacein a clockwise direction, as above described, and the stop arm willallow movement of the carriage until it engages the nger 244.

In this engagement of the stop arm, the stop arm is in the position asshown in Fig. 22 and when the stop cylinder is again oscillated the stoparm will retain that position owing to the fact that the spring 54 inthe check mechanism is constantly urging the carrier block for the stoparm 2! in a forward direction and the friction of the side 3| thereofengaging the side 33 of a slot is greater than that between the end ofthe ringer 244 and the stop engaging portion 36 of the stop arm 2.Consequently, when the cylinder moves in a downward direction, the endof the stop finger 244 will move away from the stop arm 21.

The stored up tension in the checking device will then immediately movethe carrying block 26 in a forward direction to carry the stop arm intoengagement with the next stop finger 246. The same phenomenon occurswhen the stop cylinder is rotated to allow the stop arm to pass over theupper stop finger to the next stop element 82.

From the foregoing, it is apparent that we have provided an improvedgauge and gauge stop mechanism wherein the stock may be accuratelyaligned to make the cuts in the proper places and that we have provideda gauge mechanism Wherein a single cylinder may be employed for aplurality of different runs of the stock through the machine, therebyeliminating the necessity of changing the cylinder or rearranging thestop lugs therein to make the different runs.

It is also apparent that we have provided a machine that will providesafety factors to protect the operator against injury since both handsare distant from the knife when operating the machine.

What We claim and desire to secure by Letters Patent is:

1. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation with the knife, poweroperated carriage actuating means, and means on the carriage forconnecting it with said carriage actuating means and including means forcontrolling said knife operating mechanism.

2. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation with the knife, controlmeans for the knife operating mechanism, a carriage actuating means,movable locking means for the control means, and means for connectingthe carriage with said carriage actuating means and including means forcontrolling movement of said locking means.

3. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation with the knife, a carriageactuating means, a clutch mechanism on the carriage for engaging thecarriage actuating means, and means on the carriage for actuating theclutch to connect the carriage with the carriage actuating mechanism.

li. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation with the knife, a carriageactuating means, a slip clutch mechanism on the carriage for engagingthe carriage actuating means, and means on the carriage for actuatingthe clutch to connect the carriage with the carriage actuatingmechanism.

5. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a movable carriage mounted onthe feed table for moving stock into cutting relation with the knife, anendless belt, means supporting the belt with a run thereof extending inparallel relation to movement of the carriage, a slip clutch mechanismsupported on the carriage to engage said run of the belt and effectmovement of the carriage, and means on the carriagefor actuating theclutch mechanism.

6. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage movably mounted onthe feed table for moving stock into cutting relation with the knife, anendless belt, means for supporting the belt with a run thereof extendingin parallel relation to movement of the carriage, a slip clutchsupported on the carriage toengage said run of the belt and effectmovement of the carriage, and means on the carriage for actuating theclutch and including means for controlling said knife operatingmechanism.

7. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage movably mounted onthe feed table for moving stock into cutting relation with the knife, anendless belt, means for supporting the belt With a run thereof extendingin parallel relation to movment of the carriage, a clutch mechanismsupported on the carriage for engaging said run of the belt to effectmovement of the carriage, control means for the knife operatingmechanism, movable locking means for said control means, and means onthe carriage for actuating the clutch and including means forcontrolling movement of said locking means.

8. In a machine of the character described having" 'a `movable knife:and .knife Aoperating mechanism, a feed table, a carriage mounted on Ythe feed table for'moving stock into cutting relation with the knife,power operated carriage actuating means, means for connecting thecarriage With said carriage actuating means to move said carriage atintervals and'likewise feed Ysaid stock, a series, of gauge .stopelements, stop engaging means on the carriageymeans normally supportingallof the gauge stop elements'inthe path of the stop engaging means, andmeans for moving saidv stop element supporting means lin oppositedirections to successively bring the :stop elements into stopping-relation with said stop engaging-means.

9. In a machine ofthe character describedl having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation with the knife,continuously operated carriage actuating means, means for connecting thecarriage with said carriage actuating means andv providing forcontinuous operation of the latter when the carriage is stopped, aseries Vof -gauge stop elements, stop engaging means on the carriage,means normally supporting all of the gauge i stop elements Vinthe pathofthe stop engaging means, -andmeans for moving said stop elementsupporting means in opposite directions to bring the stop elementssuccessively intostopping relation `with vsaid stop engaging means. Y

10. In a machine of the character described having a movable knife andvknife operating mechanism. a feed table, a carriage movaloly` mountedon the feed table for moving stock into cutting relation with the knife,a carriage actuating means, means for connecting the carriage with saidcarriage actuating means, aseries of gauge stop elements arranged inalignment longitudinally of the machine, means supporting the i gaugestop elements in juxtaposition with the carriage,'stop'engaging means onthe carriage, and means for oscillating said stop element `supportingmeans to successively bring the stop elementsint'o `stopping relationwith said stop engaging means.

11.` In `a machine 'of the `character described having a movable knifeand knife operating mechanism, a feed table, a carriage mounted on thefeed table for moving stock into cutting relation with ith'e knife,acarriage actuating means,

means for selectively 4connecting the carriage `with said carriageactuating means, a series of ga'uge'st'opI elements,stop engaging meanson the carriage, means supporting thegauge stop elements for movementinto and outof the path of movement ofsaid stop engagingV means,l andmeans fer selectively rotating or oscillating said stop' yelement Ysupporting means to selectively "bring the stop elements into stoppingrelation With-:said rstop engagingmeans.

`12. In :a `machine, of Athe character described 'having va'smcvableknife and knife operating fmechanism', 'a feed table,V a carriagemovablyV mounted lon the feed table for moving stock into cuttingrelation with the knife, a series of carriage stop elementssupported inengaging rela- `tion withfthe carriage to stop movement lof thecarriagepm'eans on the 1carriage for controlling said'knife operatingmechanism, and means vconnected with the knife operating mechanism torelease said stop elements from engaging position relative to the'carriage.

1'3.` In a machine of the character described having :amovable knife andknife operating mechanism, a `freed table, va carriage movably mountedon `the feed table for moving stock into cutting relation with theknife, a series of gauge stop elements, stop engaging means on thecarriage, adjustablev means supporting the gauge stop elements inposition to engage said stop engaging means, means for oscillating saidstop element supporting means to successively bring the stops intostopping relation with said stop engaging means, and means onthe stopelement supporting means for holding one or more additional series ofgauge stop elements thereon selectively brought into said position uponadjustment 'of l"said stop element supporting means and there# uponrendered effective upon oscillation thereof to Vsuccessivelybring thestops of the selected series into stopping relation with thestopengaging means.

14. In avmachine of the character described having a movable kifii'feand knife operating mechanism, Va feed table, a carriage mounted on thefeed table for moving stock into cutting Vrelation witlrthe' knife, aplurality of series of Stop elements, stop engaging means on thecar-Trage, adjustable means supporting the series of stop elements andwhereby -any preselected series thereof may be moved into position toengage said stop engaging means, means actuated by the knife foroscillating the stop element supporting means in onev direction to movesaid preselected having a movable knife andv knife operating mechanism,la Ifeed table, :a carriagemounted on the feed table for moving stockinto cutting relation with the knife, Qa'carriage actuating means, means*for connecting the carriage with said carriage actuating means, aseries of stop elements, .stop Vengaging means on the carriage, meanssupporting the stop elements `in Aposition to engage said Istop engagingmeans, means actuated by the 'knife for oscillating the stop ele- Imentsupporting means in one Vdirectionto move said stop elements fromengagement with the stop engaging. means, and means for oscillatinglthe--stop element. supporting means'in Vthe opposite direction toVreturn the stop elements into positionV to be engaged by vsaid stopengaging means,v Y

16. In a machine of the character described having a movable knife andYknife operating mechanism, a feed table,ra carriage mounted on the feedtable formoving stock into cutting relation with `theknife, a carriageactuating means, Ameans for connecting the carriage with Vsaid carriageactuating means, a seriesrof stop elements, stop` engaging means` on thecarriage,

Ameans supporting the stop elements, means forv moving said stop elementsupporting means to Vsuccessively bring theY stops into stoppingrelaelements, .stop engaging means on the .carriage,

means supporting the stop elements in position to be engaged by saidstop engaging means, means for moving said stop element supporting meansto successively bring the stops into stopping relation With said stopengaging means, and means connected with the carriage for checking theinertia thereof when the stop engaging means engages one of the stopelements.

18. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation with the knife, a carriageactuating means, means for connecting the carriage with said carriageactuating means, stop engaging means on the carriage, a series of stopelements, means supporting the stop elements to engage said stopengaging means, means for moving said stop element supporting means tosuccessively bring the stops into stopping relation with said stopengaging means, and means connected With the carriage for checking theinertia thereof when the stop means engages one of the stop elements-19. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation with the knife, a carriageactuating means, means for connecting the carriage with said carriageactuating means, stop engaging means on the carriage, a series of stopelements, means supporting the stop elements in juxtaposition with thecarriage, means for oscillating said stop elements supporting means tosuccessively bring the stops into stopping relation with said stopengaging means, and means connected with the carriage for checking theinertia thereof when the stop engaging means engages one of the stopelements.

20. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation With the knife, a carriageactuating means, means for connecting the carriage with said carriageactuating means, stop engaging means on the carriage, a series of stopelements, means supporting the stop elements in juxtaposition with thecarriage, means actuated by the knife for oscillating the stop elementssupporting means in one direction to move said stop elements fromengagement with the stop engaging means, means for oscillating the stopelement supporting means in the opposite direction to return the stopelements into position to be engaged by the stop engaging means, andmeans connected with the carriage for checking inertia thereof when thestop engaging means engages one yof the stop elements.

21. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage movably mounted onthe feed table for moving stock into cutting relation with the knife,stop engaging means on the carriage, a series of stop elements, acylinder supporting the stop elements in juxtaposition with thecarriage, means actuated by the knife for oscillating the cylinder inone direction to move said stop elements from engagement with the stopengaging means, and means for oscillating the cylinder in the oppositedirection to return the stop elements into position to be engaged by thestop engaging means.

22. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation with the knife, a series ofstop elements, a cylinder having grooves for selectively mounting thestop elements, means for rotatably supporting the cylinder, a pivotedstop arm on the carriage, and means for oscillating said cylinder tosuccessively bring the stops into stopping relation with said stoplever.

23. In a machine of the character described having a movable knife andknife operating mechanism, a feed table, a carriage mounted on the feedtable for moving stock into cutting relation With the knife, a series ofstop elements, a cylinder having grooves to mount the stop elements,means supporting the cylinder in juxtaposition with the carriage, a stoplever pivotally mounted on the carriage, means actuated by the knife foroscillating the cylinder in one direction to move said stop elementsfrom engagement With the stop lever, means for oscillating said cylinderin the opposite direction to return the stop elements into position tobe engaged by the stop lever, and means connected With the carriage forchecking inertia thereof when the stop lever engages one of the stopelements.

24. In a machine of the character described having a frame, a knifemovable on the frame and knife operating mechanism, a feed table, acarriage movably mounted on the feed table for moving stock into cuttingrelation with the knife, a series of stop elements, a cylinder havinggrooves to mount the stop elements, means supporting the cylinder Withits axis in parallel relation to direction of movement of the carriage,a stop lever pivotally mounted on the carriage for engaging said stopelements, a rock shaft rotatably mounted on the frame, a lever on therock shaft, means movable with the knife and engaging the lever foractuating the rock shaft, a driving member connected with the cylinder,a ratchet member on the driving member, means connecting the rock shaftwith the ratchet member to effect movement of the cylinder in onedirection and move said stop elements into position for engagement withthe stop lever, and means for moving said cylinder in the oppositedirection to return the stop elements into position to be engaged by thestop lever.

25. In a machine of the character described having a frame, a knifemovable on the frame and knife operating mechanism, a feed table, acarriage movably mounted on the feed table for moving stock into cuttingrelation with the knife, a series of stop elements, a cylinder havinggrooves to mount the stop elements, means supporting the cylinder withits axis in parallel relation to direction of movement of the carriage,a stop lever pivotally mounted on the carriage for engaging said stopelements, a rock shaft rotatably mounted on the frame, a lever on therock shaft, means movable with the knife and engaging the lever foractuating the rock shaft, a driving member connected with the cylinder,a ratchet member on the driving member, means connecting the rock shaftWith the ratchet member to effect movement of the cylinder in onedirection and move said stop elements into position for engagement withthe stop lever, a second actuating means connected With the drivingmember, an actuator supported by the frame, and slip clutch meansconnecting the actuator with said actuating means for moving saidcylinder in the opposite direction to rehaving turn the stop elementsinto position to be engaged by the stop lever.

, 26. In a machine of the character described a frame,'a knife movableon the frame and knife operating mechanism, a feed table, a carriagemovably mounted on the feed table for movingstock into cutting relationwith the knife, a series of stop elements, a cylinder having grooves tomount the stop elements, means supporting the cylinder Withitsraxis inparallel relation to direction of rmovement of the carriage, a stoplever pivotally mounted on the carriage for engaging said stop elements,a rock shaft rotatably mounted on the frame, a lever on the rock shaft,means movable withv the knife and engaging the lever for actuating therock shaft, a driving member connected With the cylinder, a ratchetmember on the driving member, means connecting the rock shaft with theratchet member to effect movement of the cylinder in one direction andmove said'stop ele.- ments into position for engagementwith the stoplever, a ratchet sleeve on a commonV detentY for the ratchet sleeve and.ratchet member, means for selectively positioning the detent toselectively control rotation of the ratchet sleeve, and actuating meansfor moving the driving member in reverse direction to return the stopelementsinto position to be engaged by the stop lever.

27. In a machine of the character described having a frame, a knifemovable on the frame and knife operating mechanism, a feed table, acarriage movably mountedon the feed table for moving stock into cuttingrelation with the knife, a series of stop elements, a cylinder havinggrooves to mount the stop elements, means supporting the cylinder withits axis in parallel relation to direction of movement of the carriage,a stop lever pivotally mounted on the carriage for engaging said stopelements, a rock the driving member,

shaft rotatably mounted on the frame, a lever on the rock shaft, meansmovable with the knife and engaging the lever for actuating the rockshaft, a'driving member connected with the cylinder, a ratchet member onthe driving member, means connecting the rock shaft with the ratchetmember to effect movement of the cyl-V inder in one direction and movesaid stop elements into position for engagement with the stop lever, aratchet sleeve on the driving member, a common detent for the ratchetsleeve and ratchet member, means for selectively positioning the detentto selectively control rotation of the ratchet sleeve, actuating meansfor moving the driving member in reverse kdirection to return the stopelements into position to be engaged by the stop lever, and meansactuated by the knife for releasing said detent.

28. In combination With a stop cylinder having a longitudinal groove, astop element, means for anchoring the stop element in selective posi-`tion in the groove, a second stop element mounted in the groove, and afinger on said second stop element overlying the rst stop element.

29. In a machine of the character described including Va table, acarriage slidably mounted on the table, a stop cylinder rotatablysupported above the table, stop elements on the cylinder, a stop arm forengaging the stop elements, a block slidably mounting the stop arm onthe carriage, a rod connected with the block, a check mechanism, a bellcrank lever having an arm engaging the rod and an arm engaging the checkmechanism for checking inertia of the carriage When the stop arm engagesone of the stop elements, and a stop collar on the rod. for limitingmovement of the carriage relatively to said block.

EDWARD M. BRACKE'I'I. DIETRICH DANEKE. LEG C. WILLIAMS.

